All invertebrates have phagocytic cells, but lack antibodies

a. True
b. False


ANSWER: True

Biology & Microbiology

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________ are the main cell type within connective tissue in all but one situation

a. Macrophages b. Cuboidal cells c. Fibroblasts d. Collagen fibers e. Squamous cells

Biology & Microbiology

They famous Urey-Miller experiments provided crucial support for which hypothesis?

a. the Endosymbiosis hypothesis b. the Oparin-Haldane hypothesis c. the RNA World hypothesis d. the Dickerson oxidizing atmosphere hypothesis e. the Hydrothermal vent hypothesis

Biology & Microbiology

There is a total of 5 lobes of the lungs

a. true b. false

Biology & Microbiology

Which cell migrates to the thymus gland to mature?

A. T cell B. mast cell C. monocyte D. natural killer cell E. B cell

Biology & Microbiology